Forget polished fairy-tale castles; this is a military beast designed specifically to absorb cannon fire. Spend 90 minutes navigating the claustrophobic red-brick tunnels and deep dry moats that feel like a high-stakes bunker. Skip the standard wandering and drop the $71 on the guided 2CV Citroën circuit instead. Ripping through the rugged Roussillon landscape in a vintage car hits way harder than staring at architecture. Go early to dodge the midday heat.
